公开(公告)号：US11909430B2

公开(公告)日：2024-02-20

申请号：US17897652

申请日：2022-08-29

Applicant: Silicon Laboratories Inc.

Inventor： Hendricus De Ruijter ,  Thomas Edward Voor ,  Jeffrey L. Sonntag

IPC: H04B1/16 ,  H04B17/20

CPC classification number: H04B1/16 ,  H04B17/20

Abstract: In one aspect, a method comprises: initializing a front end circuit of a wireless device into a first mode in which a radio frequency (RF) signal processing path comprises a low noise amplifier (LNA) having an output coupled to an RF filter; and in response to an RF signal received in the front end circuit having a level greater than a first threshold, reconfiguring the front end circuit into a second mode in which the RF filter is coupled to an input of the LNA.

公开(公告)号：US11901924B2

公开(公告)日：2024-02-13

申请号：US17897706

申请日：2022-08-29

Applicant: Silicon Laboratories Inc.

Inventor： Thomas Edward Voor ,  Hendricus De Ruijter ,  Richard Hendricks

IPC: H04B1/04

CPC classification number: H04B1/04 ,  H04B2001/0408

Abstract: In one aspect, an apparatus comprises a transmit path including a power amplifier to receive, process and output a transmit radio frequency (RF) signal the transmit path comprising a power amplifier. A detection circuit coupled to the transmit path may be configured to: detect, during a first portion of a packet of the transmit RF signal, a level of the transmit RF signal at an input to the power amplifier; and detect, during a second portion of the packet of the transmit RF signal the level of the transmit RF signal at an output of the power amplifier. Based at least in part on the detected level at at least one of the power amplifier input or output, a level of at least one component of the transmit path upstream to the power amplifier is to be updated, to control a transmit power variation of the transmit RF signal.

公开(公告)号：US20230421197A1

公开(公告)日：2023-12-28

申请号：US17897693

申请日：2022-08-29

Applicant: Silicon Laboratories Inc.

Inventor： Hendricus De Ruijter ,  Thomas Edward Voor ,  Jeffrey L. Sonntag

IPC: H04B1/401 ,  H04B5/02

CPC classification number: H04B1/401 ,  H04B5/02

Abstract: In one aspect, a method comprises: receiving, in a controller of a wireless device, at least one of a first interrupt or a second interrupt, where: the first interrupt is to indicate that a receive radio frequency (RF) signal received in a front end circuit of the wireless device is overloading at least a low noise amplifier (LNA) of the front end circuit; and the second interrupt is to indicate that the receive RF signal is overloading at least a passive network of a system on chip (SoC) of the wireless device; and in response to the at least one of the first interrupt or the second interrupt, reconfiguring the front end circuit from a first mode into a second mode, where a relative order of a receiver RF signal processing path is different in the first mode than in the second mode.

公开(公告)号：US20230421191A1

公开(公告)日：2023-12-28

申请号：US17897637

申请日：2022-08-29

Applicant: Silicon Laboratories Inc.

Inventor： Thomas Edward Voor ,  Jeffrey L. Sonntag ,  Richard Hendricks ,  Logan Lucas ,  Jeffrey Merrill ,  Hendricus De Ruijter ,  Luigi Panseri

IPC: H04B1/16 ,  H04B17/318

CPC classification number: H04B1/16 ,  H04B17/318

Abstract: In one aspect, a method comprises: comparing, in a comparator, a signal level of a receive radio frequency (RF) signal to a first threshold, the receive RF signal obtained from a controllable location in an RF front end circuit; and in response to the signal level of the receive RF signal exceeding the first threshold, causing the RF front end circuit to be reconfigured from a first mode in which an input to a low noise amplifier (LNA) is coupled an antenna to a second mode in which the input to the LNA is coupled to an RF filter.